Linear viscoelastic aqueous liquid detergent composition especially for automatic dishwashers having improved stability at high temperatures containing a thickener of the cross-linked polyacrylic acid type

摘要

This invention relates to a detergent composition for automatic dishwashers which is formulated as a linear viscoelastic pseudoplastic aqueous product of the gel type having exceptionally good physical stability with little residue in the bottle, little loss in glasses and better cleaning performance. Linear viscosity and pseudoplastic behaviour are obtained by incorporating a thickener of the cross-linked polyacrylic acid type having a high molecular weight. Potassium to sodium ratios by weight of at least 1/1 reduce the quantity of undissolved solid particles to a minimum in order better to contribute to the stability and pourability characteristics. Control of the incorporated air bubbles has the function of giving the product a bulk density of between 1.35 g/cm3 and 1.40 g/cm3 which approximately corresponds to the density of the liquid phase. The presence of a stearic acid or other fatty acid or salt in the composition further improves its physical stability.